At 17 52, Irene started driving at 69 km/h from her home to a hypermart 23 km away. She was at the hypermart for 1 h 20 min.
- What time did she leave the hypermart?
- After leaving the hypermart, Irene drove back along the same route and took 23 min to reach home. What was her average speed, in km/h, for the journey home?